60 citations · 93 across the 9 of their papers we have counts for
10 papers
Cosmic birefringence tomography with radio galaxies I: Testing birefringence solutions to the CMB-BAO tension
Toshiya Namikawa, Fumihiro Naokawa, Richard Battye +1
We present an independent test of cosmic birefringence induced by axionlike particles (ALPs) at low redshift using radio galaxies. We focus on models that can alleviate the mild te…
The COSMIC WISPers White Paper: The physics case for Weakly Interacting Slim Particles
Ariel Arza, Deniz Aybas, Shyam Balaji +124
Axions and other very weakly interacting slim particles (WISPs), with masses below 1 GeV, arise naturally in many extensions of the Standard Model of particle physics. In particula…
A New Constraint on the Optical Depth from the Reionization History Independent of CMB Large-Scale E-Mode Polarization
Yuta Kageura, Masami Ouchi, Fumihiro Naokawa +5
Recent studies report a mild discrepancy between BAO and CMB measurements within the CDM framework. This discrepancy could be explained if the optical depth inferred from th…
Planck Constraints on Axion-Like Particles through Isotropic Cosmic Birefringence
Toshiya Namikawa, Kai Murai, Fumihiro Naokawa
We present constraints on isotropic cosmic birefringence induced by axion-like particles (ALPs), derived from the analysis of cosmic microwave background (CMB) polarization measure…
Universal profile for cosmic birefringence tomography with radio galaxies
Fumihiro Naokawa
We propose a new method to tomographically probe cosmic birefringence using radio galaxies. We show that the redshift evolution of the cosmic birefringence angle induced by a slow-…
phase ambiguity of cosmic birefringence
Fumihiro Naokawa, Toshiya Namikawa, Kai Murai +2
We point out that the rotation angle of cosmic birefringence, which is a recently reported parity-violating signal in the cosmic microwave background (CMB), has a phase ambigui…
Gravitational lensing effect on cosmic birefringence
Fumihiro Naokawa, Toshiya Namikawa
We calculate the effect of gravitational lensing on the parity-odd power spectrum of the cosmic microwave background (CMB) polarization induced by axionlike particles (ALPs). Sever…
Constraint on Early Dark Energy from Isotropic Cosmic Birefringence
Johannes R. Eskilt, Laura Herold, Eiichiro Komatsu +3
Polarization of the cosmic microwave background (CMB) is sensitive to new physics violating parity symmetry, such as the presence of a pseudoscalar "axionlike" field. Such a field…
Isotropic cosmic birefringence from early dark energy
Kai Murai, Fumihiro Naokawa, Toshiya Namikawa +1
A tantalizing hint of isotropic cosmic birefringence has been found in the cross-power spectrum of the cosmic microwave background (CMB) polarization data with a statistical…
Fast optical flares from M dwarfs detected by a one-second-cadence survey with Tomo-e Gozen
Masataka Aizawa, Kojiro Kawana, Kazumi Kashiyama +18
We report a one-second-cadence wide-field survey for M-dwarf flares using the Tomo-e Gozen camera mounted on the Kiso Schmidt telescope. We detect 22 flares from M3-M5 dwarfs with…